the first term of an AP is 5 and command difference is 2 then the 9th term is
A)15
B)20
C)21
D)25
Share
the first term of an AP is 5 and command difference is 2 then the 9th term is
A)15
B)20
C)21
D)25
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
ANSWER: 21
a = 5 (first term of an AP)
d = 2 (common difference )
an = a +(n-1) d
an = 5 + ( 9-1) 2
= 5 + 8 × 2
= 5 + 16 = 21
Answer:
c
Step-by-step explanation:
an= a+(n-1)*d
an= 5+ (9-1)*2
an=5+16
an= 21